math crossword :]

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Across
  1. 3. For every 1 degree of descent angle, you'll descent 100 feet for every 1 mile you fly
  2. 4. inverse, if we take the number 3 and add -3 to it, the result is zero
  3. 5. the angle formed between the horizontal line
  4. 6. -1 different 1
  5. 10. 12 ÷ 3 = 4, 3
  6. 14. a line which passes through a vertex of a triangle and meets the opposite side at right angles
  7. 15. 8 ÷ 4 = 2
  8. 17. numbers, 1/2 (one half)
  9. 18. the numbers are out in _________ order 1, 2, 3, 4, 5
  10. 20. 2 and 3 are ___________ of 6
  11. 21. you were awarded extra cr__it
Down
  1. 1. number 10
  2. 2. Squares, Triangles, Rectangles, Cubes
  3. 7. the answer to a math problem
  4. 8. 3 x 4 = ---->12
  5. 9. The _____________ between 25 and 15 is 10.
  6. 11. perpendicular to the plane of the horizon or to a primary axis
  7. 12. pairs, -9 + 9 = 0
  8. 13. number -10
  9. 14. value, -9 = 9
  10. 16. -16, -3, 0, 1,
  11. 19. 100 ÷ 4 = 25